package day240527.work;

import java.util.HashMap;

public class HashMapDemo {
        public static void main(String[] args) {
                HashMap<String,String>classGroup=new HashMap<>();
                classGroup.put("第一组", "4人");
                classGroup.put("第二组", "3人");
                classGroup.put("第三组", "4人");
                classGroup.put("第四组", "3人");
                System.out.println(classGroup);

                // 回顾之前的泛型练习：Group
                // day240521.generics_demo_p2.p.Group
        }
}
